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6
votes
4answers
17k views

transparent SSL proxy myths and facts

I've been searching for many hours now about a way to setup a transparent proxy for SSL (not Squid). The general answer is that I can't, but I know there are some ways, though. My purpose is only the ...
3
votes
3answers
7k views

Easy way to “edit” the traffic coming from a tcp host (linux)

I need to make some small modification to incoming traffic from a known tcp host:port before the process handling the connection get the stream. For example, let 192.168.1.88 be a remote host which ...
11
votes
4answers
13k views

Setting up a transparent SSL proxy

I've got a linux box set up with 2 network cards to inspect traffic going through port 80. One card is used to go out to the internet, the other one is hooked up to a networking switch. The point is ...
1
vote
1answer
2k views

How to check if Ubuntu 14.04 Kernel has TPROXY

I'm using Digital Ocean's Ubuntu 14.04 image and needs the kernel to be compiled for TPROXY. Is there a way to check whether the current kernel supports TPROXY?
1
vote
3answers
463 views

What is the best way to get PRECISE domain name from ip address logged in iptables log

In iptables I am logging certain public IP addresses... say of websites visited from different workstations, depending on destination port number... All this is not really relevant to the question but ...
1
vote
1answer
3k views

haproxy transparent mode on 14.04

As per my previous question SSHD real-ip behind haproxy - I'm now attempting to setup HAProxy to transparently pass the IPs to the backend services. tproxy modules loaded / and supported in haproxy (...
1
vote
1answer
6k views

HTTPS is not working in transparent proxy with Squid

I am using Squid proxy 3.1, all systems in the LAN connects to the internet through proxy. Direct connection is blocked using the iptables from the gateway server. There are some devices which does ...
0
votes
2answers
2k views

iptables for transparent NAT

I'm trying to transparently route traffic of one Xen VM through another, like so: ------- 192.168.250.4 192.168.250.3 --------- | VM1 | <-----------------bridged----------------...